Deflector ring



y 1943. w. F. PETERSON 2,320,050

DEFLECTOR RING Filed Jan. 14, 1941 i'fcbta 19 MrFPeZgzvo/a as W PatentedMay 25, 1943 N TE STATES PATENT QF ICE 2,320,050 nE L o'roR RINGWalkerEF. Peterson, Baltimore, Md. Application January 14, 1941, serialNo. 374,398

6 Claims. c1.,137' '111 pendent upon-the dimensions of tliestructureitself, and secondarily upon the assembly alignment of the cooperatingmembers, such as the inner conical member .and the conical bore in thevalve body. ;The commerciallystandard dimensions for making and mountingassociated parts, andithe consideration of external appearance, restrictthe space allowance for such devices whilethe demands ofeconomicalcommercial manufacture determine the accuracy which can be maintained.These-factors'flstablish a limit as to the rate of quiet -flow which canbe guaranteed for each of a number of such valves, although it risjfoundin practice that greater rates of quiet flow can be employed withspecially selected valves from suchagroup, or can be obtainedat agreater expense by observing closer tolerances in manufacture andassembly.

,It has been found that, for a given size of body, and for givenoperating conditions and tolerances of dimensions and assembly of parts,the rate of quiet flow can be materially increased by employingadischarge chamber construction including a member which primarilyactsupon eddy currents in the chamber asdistinguished from exercising adirect action upon the main flow stream from said cooperating -memb ers.Conversely, greater tolerances of dimensions and alignment of parts arepermissible for a given rate of ,flowfwhen such a constructionsemployed.

An object of the present invention, therefore, is to provide astructurein' which a greater rate of flow, without objectionable noise can beseure wit wa e I iz bf e a w determined degree of accuracy in theconstruction and assembly of parts. 1

An ill s rat ve' e Q a t n t ui tion in association with other membersof the regulating stop valve assembly is ,showno iniaccompanying-drawing, in which: V s I "Figure; ,l is a coaxial sectionalview through the Va'reg at st pta ve semb Figure 2 is a correspondingview of the valve body structure alone.

Figure 3 is .a sectional view substantially on line3-'3ofFig.2.

In the drawing, the illustrated valve has a body ID with watersupply'connection It and the annular flange 12'. Downstreamward of thisflange, -the interior of the-body isprovided with an enlarged bore 13which preferably has the illustrated form of a truncated divergent conehaving an apex angle of about 22 degrees the internal surface beingformed with V-shaped ribs and 'grooves spaced forty to the inch. Beyondthis bore is a collector chamber M. -A discharge connection I5 isprovided with external threads I6 to receive the clamping nut I! whichpresses the beveled end of the outlet tube i8 into the correspondinglyshaped orifice of the discharge connection -for providing a water-tightfitting.

chamber l4 extends as apassage 9 which leads The to'the outlet tube I8,the walls of the passage standardized dimensions of the structure aresuch that a part of the containing structure for the bore .1 3 isprovided by a bridge wall 2%) formed as apart of the body. v V

The adjusting and closing structure comprises a-cap 25 which isthreadedinto the valve body and is apertured to receive the rotatablesleeve 26having acollar 21 located in a cavity of the cap and secured therein bya split ring 28.- A

sealing gasket 29-surrounds the sleeve 26 and is held in position; bythe gland nut 36. This sleeve 26 is threaded internally to receive thethreaded-stem 31 of thefrusto-conicalretarding member 32 which hasthesame apex angle as the bore I3 and has a similarly ribbed externalsurface. This-member 32* carries a guide pin 36 which is slidable in apocket 35 of the cone 32 and serves to prevent rotation of the member 732 when the sleeve 26 is turned, whilepermitting According to-thepresent invention, the collector chamber -I l is provided with-anewcontrolling means which is illustrated as being a deflector ring 40 oflarger internal diameter than the projection of the conical internalsurface of bore l3, so that the sheet of water proceeding from theannular passageway between this bore [3 and the member 32 does notdirectly impact against it. It is preferably located nearer to theupstreamward end 38 of the collection chamber than to its downstreamwardend 39. In the illustrated form, the deflector ring extends as a flangefor 180 degrees about the chamber at the blind side or portiondiametrically opposite the discharge connection IE, but may extend for amuch greater or somewhat lesser peripheral distance. It is essential,for its functioning, that it extend continuously from the common planethrough the axes of the discharge passage l5 and of the bore I3 for adistance of at least 40 degrees at the blind side denoted by bracket Bon Fig. 3. In practice, it has been found that little advantage isgained by making the deflector ring longer than 180 degrees, i. e. 90degrees from said common plane.

The character of the surfaces of the bore l3 and the member 32 may bevaried as set out in the aforesaid patents.

The deflector ring may be either smooth, as by machining, or may be ofthe rough sand finish obtained in the usual casting for valves of thisclass.

A screw-driver can be engaged with the kerfed outer end of sleeve 26 asa tool for rotating the same and thereby moving the member 32 relativeto the valve body. The annular spacin or clearance between these partscan thus be adjusted to secure the desired rate of flow for theprevailing mains pressure. With the present arrangement, very high ratescan be obtained without causing noise to develop at normal pressures asemployed for city water supplies. Forinstance, a rate of flow of 35gallons per minute without objectionable noise can be obtained bysoldering a deflector ring into the collector chamber of a valveassembly through which a similarly quiet flow of only 25 gallons perminute was previously possible under the same conditions ofmanufacturing tolerances and alignment of parts.

The axial thickness and the radial dimension of the deflector ring maybe considerably varied, but it is preferred to have the axial thicknessas small as commercially practicable for manufacture. The radial widthof the deflector ring must be such that the inner part of this ring issubstantially outside the path of the high velocity annular sheet; or,considered structurally, the deflector ring or flange is locatedexternal to the extension of the conical surface of the bore l3.

In studies of the behavior of water currents in such devices, it appearsthat a function of the deflector ring is to limit or control the waterso as to change the character and direction of the eddy or back-flowcurrents from the high Velocity discharge stream formed by the annularsheet, to render such currents of a character and amount that they donot operate to cause noise by interference with each other or with themain fiow streams, to the end that the water in all parts of thecollector chamber can quletly pass to the discharge connection.

As' an example of commercial practice, the overall height of a valvebody as shown in Figs. 2 and 3 was 2%; inches; the interfitting threadsin the cap 25 and body had a length of inch; the depth of the chamber I4between surfaces '38 and 39 was ,-2- inch; the cap threads were 1.75

inches outside diameter; the bore had a cylindrical portion inch inaxial length for ease in machining, with a downstreamward divergentconical portion having a large diameter of 1.426 inches with a length of/1 inch and an apex angle of 22 degrees; the distance from the body axisto the face of the outlet connection was 1&3- inches. The minimum radiusof the collector chamber M was inch, so that the radial distance fromthe large diameter of the bore 13 to the peripheral wall of thecollection chamber (Fig. 2) was approximately A, inch. For thisstructure, the deflector ring was formed in the original casting,without machining of its surfaces, and extended 180 degrees as shown inFig. 3, and had a thickness at its base of inch (a proper draft beingprovided at each side for casting), a height or radial width of A; inch,with rounded corners: it was spaced inch from surface 38 and inch fromsurface 39. A number of such devices all operated successfully with citywater at pressures up to pounds per square inch, and at flow rates of 32gallons per minute or above.

It will be understood that the invention is not restricted to theparticular form of employment show-n, but that it may be modified inmany ways within the scope of the appended claims.

I claim:

1. A quiet flow retarding device for liquids comprising means forproviding a collector chamber having a' discharge connection and meansfor delivering a sheet of liquid across said chamber, and a flowcontrolling deflector means located in said chamber with a portionthereof diametrically opposite the discharge connection and extendingtoward but terminating short of the path of said sheet of liquid, saidchamber including passages at both sides of said deflector means andextending in directions at acute angles to the path of said sheet andalong which the liquid may flow directly into the discharge connection.

2. A quiet flow retarding device for liquids comprising a body having abore, an enlarged collector chamber downstreamward of said bore, and alateral discharge connection; an internal member in said .bore andcooperating therewith to restrict the flow of water to a thin annularsheet which is discharged into said collector chamber; and a deflectorflange located on the wall of said collector chamber with a portion ofthe flange located diametrically opposite the discharge connection andother portions extending around the sheet toward the dischargeconnection substantially in a plane at acute angles to the direction ofthe sheet, said flange extending toward but terminating short of thepath of said sheet of liquid.

3. A quiet flow retarding device for liquids comprising a body having abore, an enlarged collector chamber downstreamward of said bore andhaving a restricted length in the axial direction of the bore, and alateral discharge passage'from said chamber: an internal member in saidbore and cooperating therewith to restrict the flow of water to a thinannular sheet which is discharged at high velocity into said collectorchamber; means for closing the bore and having its inner surface spacedfrom. the internal 1118111.. her; and flow controlling deflector meansfixedly located within the chamber with a portion thereof locateddiametrically opposite the discharge passage external of but closelyadjacent to the path of said high velocity sheet and extending aroundthe sheet substantially in the direction of a plane at right angles tothe axis of the bore for a distance at the blind side of at least 40degrees from each side of the common plane through the axes of thedischarge passage and of the bore.

4. A quiet flow retarding device for liquids comprising a body having abore, an enlarged collector chamber downstreamward of said bore andhaving a restricted length in the axial direction of the bore, and alateral discharge passage from said chamber: an internal member in saidbore and cooperating therewith to restrict the flow of water to a thinannular sheet which is discharged at high velocity into said collectorchamber; means for closing the bore and having its inner surface spacedfrom the internal member; and flow controlling deflector meanscomprising a flange fixedly located within the chamber with a portionthereof diametrically opposite the discharge passage and external of butclosely adjacent to the path of said high velocity sheet and extendingsubstantially in the direction of a plane at right angles to the axis ofthe bore for a distance at the blind side of at least 40 degrees fromeach side of the common plane through the axes of the dischargeconnection chamber, said discharge passage being located at an angle tothe direction of said sheet, an arcuate deflector flange located on thewall of said chamber opposite to the discharge passage and in a plane atright angles to the axis of the sheet, said deflector flange extendinginwardly toward but terminating short of the path of said sheet ofliquid and having a part located diametrically opposite the dischargepassage and other parts extending along the chamber wall toward thedischarge passage, said chamber including passages both upstreamward anddownstreamward of said deflector flange and leading directly to thedischarge passage in directions at right angles to the path of saidsheet.

6. A quiet flow retarding device for liquids comprising a body having aninlet at one end and an enlarged collector chamber downstreamward ofsaid inlet opening, a closing wall for said chamber at the opposite endof said body, a discharge passage leading laterally from said chamber,means at said inlet for delivering an annular sheet of liquid acrosssaid chamber toward said closing wall, and an arcuate deflector flangeextending from the chamber wall toward but terminating short of the pathof said sheet of liquid, said flange being located opposite thedischarge passage and extending substantially in the direction of aplane at right angles to the axis of the sheet for distances of todegrees at each side of the common plane through the axis of said sheetand the axis of said discharge passage, said chamber including passagesboth upstreamward and downstreamward of said flange along which theliquid may flow directly toward the discharge passage.

WALKER F. PETERSON.

